[INFO] updating cached repository drgomesp/oxidb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/drgomesp/oxidb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/drgomesp/oxidb" "work/ex/beta-1.38-1/sources/1.37.0/gh/drgomesp/oxidb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/drgomesp/oxidb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/drgomesp/oxidb" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/drgomesp/oxidb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/drgomesp/oxidb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 219dcba5223e59c579dc8c909951fa531b521e79
[INFO] sha for GitHub repo drgomesp/oxidb: 219dcba5223e59c579dc8c909951fa531b521e79
[INFO] validating manifest of drgomesp/oxidb on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of drgomesp/oxidb on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing drgomesp/oxidb
[INFO] finished frobbing drgomesp/oxidb
[INFO] frobbed toml for drgomesp/oxidb written to work/ex/beta-1.38-1/sources/1.37.0/gh/drgomesp/oxidb/Cargo.toml
[INFO] started frobbing drgomesp/oxidb
[INFO] finished frobbing drgomesp/oxidb
[INFO] frobbed toml for drgomesp/oxidb written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/drgomesp/oxidb/Cargo.toml
[INFO] crate drgomesp/oxidb already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing drgomesp/oxidb against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/drgomesp/oxidb:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 4cbc1c6394c3002121dcdec9ff98fb47b50c3414517c8437abe0ef90d7e2c785
[INFO] running `"docker" "start" "-a" "4cbc1c6394c3002121dcdec9ff98fb47b50c3414517c8437abe0ef90d7e2c785"`
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling backtrace v0.3.15
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling csv v1.0.7
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling oxidb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(box_syntax)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `oxidb`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4cbc1c6394c3002121dcdec9ff98fb47b50c3414517c8437abe0ef90d7e2c785"`
[INFO] running `"docker" "rm" "-f" "4cbc1c6394c3002121dcdec9ff98fb47b50c3414517c8437abe0ef90d7e2c785"`
[INFO] [stdout] 4cbc1c6394c3002121dcdec9ff98fb47b50c3414517c8437abe0ef90d7e2c785